This fourth-generation A6 was facelifted in 2014, when it gained styling tweaks, upgraded infotainment and more efficient engines. A second refresh came in 2016 (additional equipment and technology, redesigned front air intakes and a restyled rear end).
Throughout, the core trims remained SE and S line, with the fully loaded Black Edition arriving in late 2012. SE is the most comfortable thanks to its smaller alloy wheels and steel springs. If your budget will allow, go for the post-2016-facelift SE with additional equipment.
Need to know
In the latest What Car? Reliability Survey, the A6 ranks fourth in its class, just ahead of the Mercedes E-Class, BMW 5 Series and Jag XF.
Condition-based servicing means A6s may have gone for up to 19,000 miles without an oil change – good for fleet managers’ bottom lines but not necessarily engines’ bottom ends.
The 2.0 TDI has a cambelt that must be changed every five years or 140,000 miles.
Larger wheels on S line trim upwards spoil the ride.
Revised cars from September 2014 have Euro 6-compliant engines. Check the V5 document for confirmation.
Audi A6 2.0 TDI SE Executive Ultra: This entry-level model avoids the S line’s stiffer ride but still spoils you with front and rear parking sensors, four-zone climate control, leather seats, a multimedia interface and a digital radio.
Audi S6: Its 4.0-litre V8 should be ample justification but there are some pretty wild features too, among them active noise cancellation, a quattro drivetrain with a sports diff and figure-hugging sports seats.
Ones we found
2013 2.0 TDI S line, 159,000 miles, £5995
2015 2.0 TDI Ultra SE, 80,000 miles, £10,495
2017 2.0 TDI Ultra SE Executive, 28,000 miles, £15,000
2019 2.0 1.8 TFSI S line S tronic, 13,000 miles, £20,750
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